For Interest $185,000 PA would give you $10,179 net each month
$220,000 PA would give you $11,783 net each month.
Straight figures - if you can factor in deductions (negative gearing, wife and kids, alimony & maintenance (

) ) etc then obviously net will improve.
Not sure if medicare levy is part of tax as calculated above or extra/additional.
Obviously AU$$$"s
Cheers